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80708785 = 583194479
BaseRepresentation
bin1001100111110…
…00010010110001
312121212102122021
410303320102301
5131130140120
612001511441
72000004403
oct463702261
9177772567
1080708785
1141615783
1223042581
131394aba1
14aa0cb73
157143aaa
hex4cf84b1

80708785 has 8 divisors (see below), whose sum is σ = 98017920. Its totient is φ = 63788784.

The previous prime is 80708777. The next prime is 80708801. The reversal of 80708785 is 58780708.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80708785 - 23 = 80708777 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96825 + ... + 97654.

It is an arithmetic number, because the mean of its divisors is an integer number (12252240).

Almost surely, 280708785 is an apocalyptic number.

It is an amenable number.

80708785 is a deficient number, since it is larger than the sum of its proper divisors (17309135).

80708785 is a wasteful number, since it uses less digits than its factorization.

80708785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194567.

The product of its (nonzero) digits is 125440, while the sum is 43.

The square root of 80708785 is about 8983.8068211644. The cubic root of 80708785 is about 432.1557241088.

The spelling of 80708785 in words is "eighty million, seven hundred eight thousand, seven hundred eighty-five".

Divisors: 1 5 83 415 194479 972395 16141757 80708785